Ummagumma is worth having cause of live album. Don't waste your time looking out for bootlegs, they can easily be just shit, so check out official releases and save your money for albums of other bands/artists rather. Btw, Umma studio is interesting but nothing more, an experimental album should be inspired, so that if everybody says it sucks you can at least claim that you were expressing something. But for their own admission they had no idea of what the heck they were doing.

ASoS is a great album, and the title track is one of their masterpieces. Those were the days when they really were groundbreaking, then they quickly choose the commercial way until Animals.

__________________
If I could start again
A million miles away
I would keep myself
I would find a way